div{
    margin: 10px;
    padding: 5px;
    font-size: 12px;
    line-height: 25px;
}

#father{
    border: lightcoral 1px solid;
    padding: 0;
}

#first{
    border: #0093E9 1px dashed;
    background: hotpink;
}

#second{
    border: greenyellow 1px dashed;
    background: antiquewhite;
}

#third{
    border: aquamarine 1px dashed;
    background: chocolate;
}